Encoder Scale: Length 10 mm to 3 m, Accuracy ±0.1 μm to ±5 μm

Component Specifications

Definition

An encoder scale is a critical component in precision stages that provides accurate position feedback by generating electrical signals corresponding to linear or rotary displacement. It consists of a patterned scale (glass, metal, or polymer) with precise markings read by an encoder head, enabling nanometer-level resolution for applications requiring exact positioning.

Working Principle

Operates on optical, magnetic, or inductive principles. In optical encoders, a light source illuminates the scale's patterned markings, and a photodetector reads the reflected or transmitted light to generate quadrature signals. These signals are processed to determine position, speed, and direction with high accuracy.

Materials

Scale: Glass (e.g., borosilicate) with chromium or gold coating, stainless steel, or polymer (e.g., polycarbonate). Markings: Etched, deposited, or printed with precision up to sub-micron accuracy.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	10 mm to 3 m
Accuracy	±0.1 μm to ±5 μm
Resolution	1 nm to 10 μm
Signal Output	TTL, HTL, Sin/Cos, EnDat, BiSS
Protection Rating	IP40 to IP67
Operating Temperature	-10°C to 70°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 230-2, DIN 19245, IEC 61131-2

Parent Products

This component is used in the following industrial products

Precision Stage

A high-precision positioning platform used in wafer probing systems to accurately align and move wafers during electrical testing.

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Engineering Analysis

Risks & Mitigation

Contamination affecting signal integrity
Mechanical damage from misalignment
Thermal expansion causing measurement errors
Electrical interference in signal transmission

FMEA Triads

Trigger: Dust or oil accumulation on scale surface
Failure: Signal dropout or reduced accuracy
Mitigation: Use protective covers and regular cleaning with approved solvents

Trigger: Improper mounting or vibration
Failure: Scale cracking or misalignment
Mitigation: Follow torque specifications and use vibration-damping mounts

Trigger: Environmental temperature fluctuations
Failure: Thermal expansion leading to positional errors
Mitigation: Install in temperature-controlled environments or use scales with low thermal expansion coefficients

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 μm per meter for linear scales, ±5 arc-seconds for rotary scales

Test Method

Laser interferometry, calibration against reference standards, environmental testing per ISO 230-2

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Encoder Scale

Manufacturer profiles associated with Encoder Scale.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between incremental and absolute encoder scales?

Incremental scales provide relative position data and require a reference point, while absolute scales give unique position values without homing, ensuring position retention after power loss.

How do I maintain an encoder scale?

Keep it clean from dust and contaminants, avoid mechanical shocks, and regularly calibrate with manufacturer guidelines to ensure long-term accuracy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Encoder Scale